Texas Instruments Releases Eight-channel Analog-to-digital Converters

(Product News, 24 Jan 2008)

Texas Instruments Inc. has introduced its family of 10- and 12-bit, eight-channel (octal) analog-to-digital converters (ADCs) that enable smaller medical imaging, wireless communications, military guidance, automatic test equipment and video equipment.

The ADS5281 family offers high resolution and sampling speeds of up to 65MSPS, low noise performance and advanced digital features, which are critical in sensitive imaging applications like portable ultrasound and MRI equipment. The ADS5281, ADS5282 and ADS5287 ADCs feature power consumption 30 percent less than competing solutions. At the highest sample rate of 65MSPS, the ADS5281 family consumes as little as 77mW per channel. With dynamic scaling, at a 30MSPS sample rate, the per-channel power consumption is as low as 48mW per channel. The ADS5281 family is designed to interface with TI;s octal variable gain amplifier, the VCA8500, which features 0.8nV/square root Hz input noise at only 63mW per channel power consumption.

The ADS5281 devices and VCA8500 come in 64-pin 9x9mm QFN package. Connecting the amplifier to the ADC does not require additional components, and implementing the combined solution requires the same footprint as any comparable integrated device.

The ADS5281 family of ADCs is available in a space-saving 9x9 mm, 64-pin QFN package. The ADS5281 is also available in an 80-pin TQFP package that provides an easy transition to these next-generation ADCs, as the TQFP package is pin-for-pin compatible with TI's previous-generation ADS527x family of octal ADCs.

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